Donate, Volunteer, Solve

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Across
  1. 4. blood type with Rh factor (8 letters)
  2. 9. of fulfillment from helping others (12 letters)
  3. 11. age to donate blood in most countries (5 letters)
  4. 14. of giving blood to save lives (8 letters)
  5. 15. donors must meet weight ____ (10 letters)
  6. 16. often organizing blood drives (3 letters)
  7. 19. blood is tested for ____ like HIV (8 letters)
  8. 21. a key health screening perk for donors (7 letters)
  9. 22. volunteers often provide ____ support (7 letters)
  10. 24. person who donates blood without pay (9 letters)
Down
  1. 1. iron-rich protein in red blood cells (11 letters)
  2. 2. one blood donation can save up to ____ lives (5 letters)
  3. 3. volunteers help during natural ____ (9 letters)
  4. 5. universal blood type that anyone can receive (7 letters)
  5. 6. a volunteer’s motivation (6 letters)
  6. 7. liquid part of blood that transports cells (6 letters)
  7. 8. volunteers help ____ communities (8 letters)
  8. 9. temporary shortage of blood in banks (8 letters)
  9. 10. blood donation may lower risk of this heart condition (6 letters)
  10. 12. donation reduces excess ____ in the body (4 letters)
  11. 13. hormone released when helping others, boosting happiness (7 letters)
  12. 17. often work for ____ organizations (8 letters)
  13. 18. life-saving fluid in veins (5 letters)
  14. 20. social benefit of volunteering: building ____ (9 letters)
  15. 23. a common fear of blood donors (8 letters)